724 results about "Polymer particle" patented technology

A process is provided for transferring a product from a first polymerization zone (101) to a second polymerization zone (301) arranged in series with the first polymerization zone (101). The process comprises: discharging a product of the first polymerization zone (101) from the first polymerization zone (101); separating the product into a gas phase comprising any unreacted monomer and gaseous agent used in the first polymerization zone (101), and a solid phase comprising a polymerization product; and transferring the solid phase to the second polymerization zone (301) via at least one of a first transfer vessel (202) and a second transfer vessel (203) arranged in parallel to each other and in selective communication with each other, wherein the at least one of the first transfer vessel (202) and second transfer vessel (203) is further in selective communication with the second polymerization zone (301), and the second polymerization zone (301) is a gas-phase polymerization zone.

The invention relates to an epoxy core-shell polymer particle and resin, a preparation method of the epoxy core-shell polymer particle and resin and application of the epoxy core-shell polymer particle and resin to epoxy resin. The preparation method of the epoxy core-shell polymer particle comprises the following steps: heating and mixing a polybutadiene seed emulsion, a reducing agent, an emulsifier and the like; adding methyl methacrylate and an initiator, and glycidyl methacrylate and an initiator, and heating to react; compared with the prior art, the core-shell particle with the outer layer of the synthesized shell containing the epoxy group can be used for toughening the epoxy resin, so that the toughness of the epoxy resin is effectively improved while the excellent heat resistance and mechanical properties of the epoxy resin are maintained.

The present invention relates to a composition comprising an aqueous dispersion of biodegradable polymer particles, a method of preparing the composition, and a method of preparing a coated substrate comprising the composition. The composition is useful as a coating applied to a substrate, particularly a paper substrate. The coated paper is useful as a single layered barrier coated paper or paperboard.

Membranes and related systems and methods for separation of components in liquids are generally described. The membrane may include particles in a polymer matrix (e.g., a polyamide layer). The particles may include metal-organic framework particles comprising functional groups (e.g., from post-synthetic modification) that can, in some instances, improve the rejection and / or selectivity of the membrane. For example, the metal-organic framework may comprise functional groups bound to hydrophobic groups (e.g., alkyl chains) that assist with suspension stability in nonpolar solvents during membrane fabrication. As another example, the metal-organic framework may comprise functional groups bound to crosslinking agents that facilitate in situ crosslinking of the particles with the polymer matrix, thereby reducing voids in the membrane and / or leaching. In some instances, the membrane is a thin-film nanocomposite membrane (e.g., for separating components like charged species and / or neutral species) formed via, for example, interfacial polymerization in the presence of the particles.

A shoe or other footwear has a non-removable multi-layer foot-support member (FSM) embedded within the sole. The uppermost layer is a breathable, stretchable textile configured for direct contact with the foot, offering softness and elasticity. Directly beneath it is a containment layer made of elastic fabric partially infused or impregnated with silicone, which stabilizes and restrains the granular contents below. The central layer includes one or two or three sealed chambers filled with a cured mixture of silicone and polymeric granules, forming a deformable medium that yields under pressure and mimics natural granular terrain or sand. Beneath this is a synthetic textile layer that restricts lateral expansion of the granular mixture, and preserves chamber geometry during use. The bottom component is a semi-rigid base that structurally supports and anchors all overlying layers.

A method of three-dimensional printing can include iteratively applying a polymer build material as individual layers to a powder bed, where the polymer build material includes from about 80 wt % to 100 wt % polymeric particles, and based on a three-dimensional object model, selectively applying a coalescing agent onto individual layers of the polymer build material. The coalescing agent can include an aqueous liquid vehicle and a coalescing solvent that depresses a melting point of the polymeric particles. The method can include exposing the powder bed to heat to selectively coalesce portions of individual layers of the polymer build material in contact with the coalescing solvent. The heat may not be sufficient to coalesce the polymer build material that is not in contact with the coalescing solvent and may be sufficient to fuse the polymeric particles in contact with the coalescing solvent together to form a three-dimensional object.

The present invention relates to a composition comprising an aqueous dispersion of biodegradable polymer particles, a method of preparing the composition, and a method of preparing a coated substrate comprising the composition. The composition is useful as a coating applied to a substrate, particularly a paper substrate. The coated paper is useful as a single layered barrier coated paper or paperboard.

The invention provides a non-fluoropolymer, a non-fluoropolymer composite diaphragm and application, the non-fluoropolymer comprises a polymer A and a polymer B at least partially coating the surface of the polymer A, the crosslinking degree of the polymer A is X1, the crosslinking degree of the polymer B is X2, 5% < = X1 < = 10%, and 50% < = X2 < = 60%; the non-fluorine polymer composite diaphragm comprises a base membrane and a coating layer coated on at least one side of the base membrane. The non-fluorine polymer particles have high swelling rate at high temperature and reversible characteristics of absorbing and releasing electrolyte, when the non-fluorine polymer and the non-fluorine polymer composite diaphragm are applied to a battery cell, when the battery cell is heated abnormally, the non-fluorine polymer swells at high speed and blocks an ion shuttle channel, further temperature deterioration is avoided, and the service life of the battery cell is prolonged. Meanwhile, when the temperature returns to normal, the non-fluorine polymer particles can recover to the original morphology and recover an ion shuttle channel, so that the subsequent cycle performance of the battery cell is not influenced.

The utility model relates to the technical field of batteries, and discloses a diaphragm of a battery cell, the battery cell and a battery pack. The separator includes a base film and a hybrid coating. The mixed coating is coated on a single surface or double surfaces of the base film; the mixed coating comprises a heat-resistant material and polymer particles, the particle size of the polymer particles is larger than that of the heat-resistant material, the polymer particles at least partially protrude out of the heat-resistant material to form supporting protrusions, and the supporting protrusions are suitable for forming a gap between the diaphragm and the pole piece after the diaphragm and the pole piece are laminated. According to the diaphragm of the battery cell provided by the utility model, the electrolyte infiltration effect of the pole piece can be improved. And meanwhile, the polymer particles have relatively strong electrolyte absorption performance, can absorb and store part of electrolyte, are beneficial to infiltration of a battery cell pole piece, and continuously release the electrolyte in the cycle process of the lithium battery cell for supplementing the electrolyte consumed by the pole piece, so that the cycle life of the battery cell is prolonged.

The invention discloses a polymer foamed sheet as well as a preparation method and application thereof, and relates to the technical field of foamed materials. According to the preparation method of the polymer foamed sheet provided by the invention, firstly, the polymer particles with specific morphology are mixed, hot pressed and sintered to obtain the sheet with certain porosity, and then the sheet is foamed and sintered to form pores in the sheet, so that diffusion of supercritical fluid is accelerated; according to the preparation method, rapid and efficient preparation of the polymer foamed board can be achieved, the obtained foamed polymer board has abundant foam holes with high uniformity in size and distribution, the foaming ratio can reach 8.3 times or above, the density is low, the light weight characteristic is excellent, the large-scale application prospect is achieved, meanwhile, the good heat insulation characteristic is achieved, and the application prospect is wide. The heat conductivity coefficient is not higher than 0.09 W m <-1 > K <-1 >.

Disclosed are a separator for a secondary battery, and a secondary battery including the same, the separator including a porous substrate, an inorganic layer located on at least one side of the porous substrate, and an adhesive layer located on the inorganic layer, wherein the adhesive layer includes first vinylidene fluoride-based polymer particles and second vinylidene fluoride-based polymer particles, having different solation temperatures.

The present application provides a separator, an electrochemical device and an electronic device. The separator comprises a base material, and an inorganic coating and a bonding layer that are arranged on one surface of the base material; the inorganic coating is arranged between the base material and the bonding layer; the binding layer is arranged on the other surface of the base material; the bonding layer comprises polymer particles, and the average particle size of the polymer particles is Dv50 μm; and the surface of the inorganic coating is provided with a plurality of pits, the depth of each pit is C μm, and C and Dv50 meet the following conditions: 0.25≤C / Dv50≤4 and 0.5≤C≤2. When the separator is applied to the electrochemical device, the internal resistance of the electrochemical device can be reduced, improving the temperature conversion coefficient of the electrochemical device.

Provided is a toner comprising: a toner particle containing a binder resin; and an organic silicon polymer particle on a surface of the toner particle, wherein the binder resin contains a crystalline resin, and when the toner particle is pelletized and a Young's modulus of the toner measured in a micro compression test at 25° C. is represented by TE (MPa) and when one organic silicon polymer particle is separated from the toner and a Young's modulus of the one organic silicon polymer particle measured in a micro compression test at 25° C. is represented by SiE (MPa), TE and SiE satisfies 800≤TE≤2500 and 1.5≤SiE / TE≤10.0.

The application discloses large-diameter core-shell polymer particles, a preparation method and application thereof. The large-diameter core-shell polymer particles have a particle size of 1-50 microns; the structure of the particles comprises a water-insoluble soft substance layer and a hard substance layer, and the weight ratio of the soft substance layer to the hard substance layer is 1:0.1-10, and the hard substance layer is located at the outer layer of the soft substance layer. The particles are prepared by using a modified aqueous suspension polymerization and / or emulsion polymerization method. The obtained particles can improve the hardness of an electric core, inhibit the deformation of the electric core, and do not affect the air permeability. Compared with general micron-level homogeneous polymer particles, the particles provided by the application have a soft core and hard shell structure, which is also beneficial to improving the performance of a diaphragm. The hard substance layer located at the outer layer of the particles ensures that the diaphragm coating is not sticky after drying, so that the diaphragms are not adhered to each other after being wound. The soft substance layer located at the inner layer of the particles can provide strong adhesion, so that the diaphragm and the pole piece have higher peeling strength.

The invention discloses a bio-based polymer emulsion as well as a preparation method and application thereof, and belongs to the technical field of aqueous polymer emulsions. The emulsion comprises an aqueous continuous phase, bio-based polymer particles, a stabilizing system, and a bionic catechol adhesion component. Specific modified starch is innovatively utilized for assistance, and a bionic adhesion shell layer is constructed on the surface of a bio-based polymer core in situ. Compared with similar products in the market that adhesion to inert substrates can be improved only by adding a large amount of tackifying components, the scheme has the advantages that excellent dry and wet adhesion can be realized on the surfaces of difficult-to-adhere substrates such as polypropylene and polyethylene only by constructing an extremely thin interface functional layer, and the functionalization efficiency and economical efficiency of the bio-based material are greatly improved. Meanwhile, the system effectively overcomes the industrial problem that the high-solid-content emulsion is easy to settle, has excellent storage stability and construction adaptability, and conforms to the development trend of sustainable barrier packaging and high-performance water-based coatings in the future.

The invention relates to the technical field of batteries, in particular to a composite diaphragm, a preparation method thereof and a secondary battery. The composite diaphragm comprises a base membrane, a first coating arranged on the surface of at least one side of the base membrane and a second coating arranged on at least part of the surface of the first coating, the first coating comprises filler particles and composite particles, the filler particles are stacked to form a filler layer, and the composite particles are embedded into the filler layer and form protrusions on the surface of the filler layer; the composite particles comprise primary particles of a first polymer and secondary particles formed by co-agglomeration of ceramics; the second coating comprises polymer particles; the polymer particles comprise second polymer primary particles; the height h of the composite particles protruding out of the second coating on the filler layer satisfies 1 [mu] m < = h < = 4.9 [mu] m. The diaphragm and an electrode plate are good in adhesion, enough space is provided for storage of electrolyte, ion conduction is not affected, lithium separation of the battery is not prone to occurring, and the cycle performance and the energy density of the battery are improved.

Filled polyols and processes for their production. The filled polyols include a carrier polyol and polymer particles dispersed in the carrier polyol. The carrier polyol includes a polyether polyol having a functionality of 2 to 6, an OH number of 20 to 120 mg KOH / g, and a poly(oxyethylene) content of at least 60% by weight, based on total weight of the polyether polyol. The polymer particles exhibit a multimodal particle size distribution.

Disclosed in the present application are a separator and a preparation method therefor, a battery, and an electric device. The separator comprises a substrate and a coating, wherein the coating is formed on at least one side of the substrate, and comprises acrylic ester polymer particles, the acrylic polymer ester particles having an AFM adhesive force of 2-3 nN.

The invention relates to the technical field of MBS resin preparation, in particular to MBS resin with improved low-temperature tensile strength and a preparation method thereof. The MBS resin for improving the low-temperature tensile strength is prepared from the following main raw materials: butadiene, styrene, methyl methacrylate, butyl acrylate, N-phenylmaleimide, BAPT, a silane coupling agent and an auxiliary reinforcing monomer, the composition also comprises the following auxiliary agents: an emulsifier, an initiator, a molecular weight regulator and an antioxidant. Through gradient introduction and step-by-step reaction of a rigid monomer N-PMI, a flexible monomer THFA and a cross-linking agent BAPT, a fine structure of'in-core rigidity increasing, shell layer rigidity and softness and interface strengthening 'is realized in polymer particles. By means of the collaborative structure from inside to outside, optimal distribution of rigidity and toughness of the material on the molecular level is achieved in advance, and the root reason for breaking through the low-temperature performance balance bottleneck macroscopically is achieved.

The invention discloses a water-based laminating adhesive and a preparation method thereof, and the laminating adhesive is a uniform emulsion prepared by taking a monomer, a nano filler, a cross-linking agent, an initiator, a compound additive and deionized water as raw materials through the steps of pretreatment, polymerization reaction, cross-linking modification and post-treatment. The monomers comprise a hard monomer, a soft monomer and a functional monomer; the nanofiller is a modified cellulose nanocrystal, and the cross-linking agent is a polyisocyanate cross-linking agent; the adsorption of the nanofiller on the surfaces of polymer particles is further improved through the modified cellulose nanocrystals, the peel strength is further improved by introducing the cross-linking agent, the mechanical property is improved, and the problem of'strength-toughness' contradiction in the prior art is solved.

A three-dimensional printing kit can include a polymeric build material including from about (80) wt % to (100) wt % polymer particles having an average particle size from about (10) μm to about (150) μm, and can also include a fusing agent including an aqueous liquid vehicle and from about (2) wt % to about (20) wt % of a mixture of organic dye radiation absorbers. The mixture of organic dye radiation absorbers can include a charged yellow water-soluble organic dye and a cyan water-soluble organic dye. The mixture of the organic dye radiation absorbers can be from about (1) wt % to about (40) wt % soluble in water.

To provide a group of polyorganosiloxane-containing polymer particles that yield molded articles with excellent impact strength. [Solution] A polyorganosiloxane-containing polymer particle group according to one aspect of the present invention comprises a polymer (A) containing a polyorganosiloxane (A1) and a first vinyl polymer (A2), and a second vinyl polymer (B). When the cross-section of a resin piece obtained by dispersing the polyorganosiloxane-containing polymer particle group in a resin is observed with a transmission electron microscope, the ratio of the number of particles satisfying the following formula (1) is less than 60%, where L is the diameter of each particle in the polyorganosiloxane-containing polymer particle group and M is the maximum domain length of the polyorganosiloxane (A1). M / L>0.1 ···(1)

The disclosure relates to microparticles and nanoparticles comprising a polymer matrix comprising an uncapped polymer and a net positively charged therapeutic agent at neutral pH. More particularly the disclosure relates to PLGA and / or PLA particles comprising an uncapped polymer for extended, controlled release of positively charged proteins or peptides at neutral pH. Methods of making the particles and administering the particles are also provided.

A separator includes a substrate, an inorganic coating layer, and an adhesive layer, where the inorganic coating layer and the adhesive layer are disposed on a first surface of the substrate. The inorganic coating layer is disposed between the substrate and the adhesive layer. The adhesive layer is disposed on a second surface of the substrate. The inorganic coating layer includes filler particles. The adhesive layer includes polymer particles. The separator includes a first surface provided with the inorganic coating layer and the adhesive layer. In a region with an area of 100 μm2 on the first surface, a quantity of the polymer particles is A, where 10≤A≤100. An average particle size of the filler particles is Dv50−1 μm, and an average particle size of the polymer particles is Dv50−2 μM, WHERE Dv50−1 AND Dv50−2 SATISFY 0.2≤Dv50−1 / Dv50−2≤2.5 AND 0.2≤Dv50−1≤1.

A one-component waterborne coating composition comprising: a) an aqueous dispersion of polymer particles, which polymer particles comprise an anionic-stabilized copolymer having a Mw of at least 100,000 g / mol and self cross- linking functionality, wherein the copolymer is an acrylic copolymer, an acrylic-vinyl copolymer, or a polyurethane vinyl-acrylic copolymer; and b) an organosilane; wherein: the organosilane is unreactive towards carboxylic acid functionality; and the organosilane is present in an amount of at least 5 wt.% of the total solids of the coating composition; and a coated substrate comprising a substrate and a coating, which coating is obtained by applying said coating composition to the substrate and allowing the coating composition to dry.

There is provided a method of annealing granules of a polyaryletherketone, PAEK, polymer to obtain annealed granules suitable for use in an additive manufacturing process. The method comprises: a) obtaining precursor granules of the PAEK polymer, wherein the precursor granules have a crystallinity of between about 0% and 20%, as measured by differential scanning calorimetry, DSC; and b) heating the precursor granules to an annealing temperature to thereby obtain annealed granules, wherein the annealing temperature is at least a glass transition temperature, Tg, of the PAEK polymer and at most about 50°C less than a melting temperature, Tm, of the PAEK polymer. following annealing in b), the annealed granules have a crystallinity of between about 15% and 35%, as measured by DSC, and wherein the annealing in b) increases the crystallinity of the precursor granules by at least 2%.

The present invention relates to a system of at least two types of switchable capsule luminescent pigments, wherein the capsule luminescent pigments are polymer particles with a diameter of 0.1-1000 µm, each containing at least one luminescent substance and a photochemically switchable absorber, wherein a first type of capsule luminescent pigment comprises a first luminescent substance emitting in a first color in the VIS spectral range; a second type of capsule luminescent pigment comprises a second luminescent substance emitting in a second color in the VIS spectral range, wherein the first and the second color are different;and the two capsule luminescent pigments each comprise the same photochemically switchable absorber, wherein the photochemically switchable absorber has a first and a second switching state, and the absorption spectrum of the photochemically switchable absorber in the second switching state strongly overlaps with the excitation spectra of the first and the second luminescent substance. The present invention further relates to a switchable luminescent printing ink comprising a system of at least two types of switchable capsule luminescent pigments as described herein, and to a security document, preferably a banknote, with a switchable luminescent print comprising a system of at least two types of switchable capsule luminescent pigments as described herein.

The invention relates to a polymer composition comprising a polyamide or polyester carrier polymer matrix in which special polymer particles are embedded, to a process for the preparation of this polymer composition, to the use thereof as laser inscription additive or laser welding additive in organic polymer compositions, and to a laser-inscribable or laser-weldable organic polymer composition comprising this polymer composition.